53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = mayContainChildComponent;
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var _jsxAstUtils = require("jsx-ast-utils");
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/**
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* Returns true if it can positively determine that the element lacks an
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* accessible label. If no determination is possible, it returns false. Treat
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* false as an unknown value. The element might still have an accessible label,
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* but this module cannot determine it positively.
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*
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*
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*/
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function mayContainChildComponent(root, componentName) {
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var maxDepth = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;
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function traverseChildren(node, depth) {
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// Bail when maxDepth is exceeded.
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if (depth > maxDepth) {
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return false;
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}
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if (node.children) {
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/* $FlowFixMe */
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for (var i = 0; i < node.children.length; i += 1) {
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/* $FlowFixMe */
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var childNode = node.children[i]; // Assume an expression container renders a label. It is the best we can
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// do in this case.
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if (childNode.type === 'JSXExpressionContainer') {
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return true;
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} // Check for comonents with the provided name.
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if (childNode.type === 'JSXElement' && childNode.openingElement && (0, _jsxAstUtils.elementType)(childNode.openingElement) === componentName) {
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return true;
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}
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if (traverseChildren(childNode, depth + 1)) {
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return true;
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}
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}
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}
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return false;
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}
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return traverseChildren(root, 1);
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}
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